Hi! New here. My betta has been sick for almost 2 months now, and no medication seems to work. Tried medication for ich, dropsy, velvet, added aquarium salt, nothing seems to help. There was fin rot but it seems to have stopped. I had previously thought it was velvet but thereās no more gold dust on him. He kept lying on his side, eye lid is half closed and hardly moving. There was a period he breathed heavily but is now normal. He had been eating normally until 2 days ago when he stopped eating altogether. There are no other fishes or items in the tank since he got sick and Iāve been changing his water every 3-4 days. Anyone knows what it might be?